Shuttle and bobbin for sewing machines



l March 30 1926. X Y 41,578,797

A T. A. BEANEY 0 SHUTTLE AND om FQR SEWING MQGHINEs/l A File@ Jpg@ 24. 24

ff V f law ATTORNEY Patented Mar.

l y `A UNITED-STATES THOMAS A' nnnnnY; or Pononnini:react;A NEW Yeni; As'srGNOR 'roj BEANEY RUBBER if COMPANY, me., oF'NEWfYORk', N. Yi. A CORPORATION OE'NEW YORK; l f

sHUTTnEjA-ivn- Bonnin non siiwrnef MAeHI-Nns.

App'ltcatonaledune 24, 119244 Serial No.. 722,951.;

To all wizomtt mag/f concern.' 5 y Be it knovvnthat THOMAS A. Hannity, a sub],ect of the King. oit- Great Britain, and

in vShuttles and Bobbins for Sewing Machines, of which tlie'folloWing is a specifi-V l cation.

My invention relates to improvements in shuttles and bobbins for serving machines, and more particularly to that type of sewing machine which has an oscillating shut- `tle and a bobbin held to turn in the shuttle and with relation to the shuttle.

' This structure is frequently used On'sewing Vmachines Which have a bed in the form of an arm adapted to enter beneath flaps or hollow articles, such as boots and shoes. Heretofore the shuttle and bobbin used in a machine -of this kind has been satisfactory.'I

becausefsuch machine has usually been run either by foot power, or -at vleast at com! i My invention is adapted to meet and overcome the above difficulties by providing a yielding brakeV for the bobbin which Will `give the desired flexibility referred to, and.

yet will hold the bobbin With sufficient ten- 'sion to prevent 1t from'V being carried too far by momentum, even if' the 'speed of the' machine is very high.

I have used this structure in sewing loops' to tire flaps, and I find that itgreatl'y facilitates the Work, and With the extension of the" needle plate herein referred to, and the tension given to the bobbin, the machine may be run at very high speed, and consequently more Work turned out on it than Where the old style bobbin and shuttle are used. All of which Will be better understood from the following description.

Reference is to be had to the accompany- Figure 1 is a broken Vperspective View showing the application of my inventionl to.

a Vmachine of the kind referred to.

y Figure 2 is an enlarged detail plan of the y shuttle and bobbin.

Figure 3 is across section through the shuttle. i

Figure 4L is a cross section showingV aL slightly modified -form of the shuttle, and

Figure 5l isa cross section showing a kind of vvork'to Which the machine is Well adapted. I

The machine in general is of'a Well known type,the drawings indicatinga common form ofSinger sewing machine having the bed 10 in the form of an" arm, and suitable needle bar mechanismY 11. plate 12 is pivoted on thetop of the arm 10 and covers the shuttle asusual, but instead The needley of terminating at the end of the 'arm` as is customary, it is prolonged as shown in Figure 1 so 'as' to readilyv entera structure like 9, for instance, in Figure 5,' and open the structure up so( that thearm 10 can more readily receive it or enter it.' The shuttle' 13 and bobbin 14 are precisely as usual so far as their threading and operation are concerned, but the shuttle usually isV in the form of a ring open at the bottom, and the bobbin 14 sits in it. In OrderA that my im-l provement may be carried out, I preferably eov close the shuttle bottom as shown at 15, thus Y providing a convenient means for supporting the center post 16V vvhich enters thev hole 17 of the bobbin, l The post 16 affords a convenient means of flexibly braking the bobbin 14, and one Way which lhavetried and Which is satisfactory,

is shown in Figure 3,' in which' a ball 18 is held in a transverse socket 19 in' the post,`

and ispressed outward'by the spring 20. This bearsagainst the Wall ofthe holev 17 through the bobbin,1and so` when the sluittle 13 is Osci'llated, the ball 18 presses with sufficient friction to prevent the bobbin from turning too far at the reverse movement of the shuttle, and yet itfleaves sufficient freedom of movement between the shuttle and bobbin to meet all requirements of the Work.

Obviously the bobbin might be flexibly braked'or given the vrequired tension in many Ways. Another Way from the above is illustrated in Figure t. Here the post 16 is split vertically as shown at 2l, thus giving to it a certain springiness, and if the post is of a size Which requires the separated members to be pressed slightly towards each other when Vthe'bobbin is placed over the post, the spring of the vpost members Will f accomplish the desired braking of the bobbin and still give it the necessary iiexibility. Doubtless the bobbin might be given the required tension in many other Ways, but the illustrations serve to fully bring out the feature of my invention, to Wit, the Vflexible geref/e7 braking or tensioning of the bobbin with respect to its containing shuttle.

l claim f The combination With an oscillatingsewing machine shuttle having a center post to enter the bore of abobbin, said post having a 'y transverse bore therein, of a spring pressed ball in said bore adapted to project into Contact with the Wall of the bobbin bore on said post,

In testimony whereof, I have signed my name to this specification this 19th day of June, 1924;.

THOMAS A. BEANEY.

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